Disposable syringe and detachable receptacle



c. J. MILTON 2,969,792 DISPOSABLE SYRINGE AND DETACHABLE RECEPTACLE Jan. 31, 1961 Filed May 19, 1958 INVENTOR CHARLE S J. MILTON FIGJ.

ATTORNEYS United States Patent DISPOSABLE SYRINGE AND DETACHABLE RECEPTACLE Charles J. Milton, 4200 Anderson Road, Coral Gables, Fla.

Filed May 19, 1958, Ser. No. 736,148

9 Claims. (Cl. 128-227) The present invention relates to a new and improved disposable medicated hygienic syringe.

An important object is to provide a disposable syringe assembly in the form of a flexible bag or liquid receptacle having an open top or mouth, and a closed bottom to which is connected a flexible tube that communicates with the interior of the bag for withdrawing the liquid therefrom. A pre-filled flexible bottle or container is detachably connected to the bag through an opening therein and a combined clamping collar and supporting member. The bottle or receptacle is filled with the medicament at the laboratory instead of at the fabricating plant and the fixed tubular supporting member is disposed on the inside of the bag and is arranged releasably to receive the neck of a suitable flexible container, such as a plastic bottle of the squeeze-to-use type, thus providing means for allowing different types of medicaments to be detachably connected to the bag so as to mix with the liquid contents thereof.

A further object consists in associating with the neck of the flexible bottle or container and the supporting membar, a slip-type plug which normally serves as a closure for the neck of the bottle and which is forceably ejected therefrom upon the application of pressure being applied to the squeeze-to-use flexible bottle or container. Additionally, means are provided when the plug is forced from the bottle for preventing the plug from falling into the liquid or solution in the bag.

Other objects and advantages of the invention will become apparent from the following description when taken in conjunction with the accompanying claims and drawings.

Referring to the drawings in which is shown a preferred embodiment of the invention:

Fig. l is a side view of a disposable medicated syringe bag constructed in accordance with the present invention;

Fig. 2 is an end view of Fig. 1 showing the bag in its collapsed position;

Fig. 3 is a sectional view taken substantailly along the line 3-3 of Fig. 1;

Fig. 4 is an enlarged sectional view taken substantially along the line 4-4 of Fig. l; and

Fig. 5 is a detailed perspective view showing the connection of the flexible bottle or container to the bag and the closure plug in its open position.

Referring to the drawings, indicates a liquid receptacle in the form of a flexible bag made of any suitable water-proof, durable, pliable material and of any desired size or shape. The bag 10 has an open top or mouth 11 and is provided with collapsible confronting side portions 12 so that it may be readily expanded or contracted. The upper open end 11 of the bag is folded over downwardly and outwardly of the top to form a depending hem 13 between which and the adjacent surface of the bag, is positioneda drawstring 14, the ends of which terminate in the loops 15, so that when the mouth of the bag is closed, it may be connected to any suitable support so as to be maintained in a suspended position for use.

The hem 13 below the drawstring 14 may be secured to the adjacent surface of the bag in any suitable manner, as at 16, such as by a heat seal, glue, cement or the like. The bottom 17 of the bag has a depending tubular nipple 18 to which is fixedly secured one end of a flexible discharge tube 19, that is connected at its opposite end to a nozzle tip 20.

One side of the bag adjacent the mouth 11 is provided with an opening 21. A combined clamping and tubular supporting member or collar, generally indicated by the numeral 22 (Fig. 3), is positioned within the bag and is formed with an annular peripheral flange 23 (Fig. 4) having a reduced centrally disposed tubular boss 24 extending outwardly therefrom into the bag it). The annular flange 23 surrounds the opening 21 and is arranged to bear against the inner wall of the bag so as to be fixedly secured thereto in any suitable manner, such as by glue, cement, or the like, 25, so that the tubular portion 24 reg isters with the opening 21 in the bag when the parts are assembled. A flexible bottle or container 26 of the squeeze-to-use type may be made of any suitable material, such as plastic or the like, and is filled at the laboratory with any suitable medicament, such as an antiseptic or germicidal agent, thus insuring the contents of the flexible bottle or container 26 holding the correct amount of the medication and obviating the necessity of filling the bottle at the plant where it is made or to be used.

The bottle 26 has a reduced neck 27 which, as shown, is externally threaded, as at 28, so as to be connected to the internal threads 29 of the tubular portion 24 of the supporting member 22. After the flexible bottle is filled at the laboratory, at slip-type plug 3t) is inserted into the neck 24 so as to close the same. The plug 30 has a smooth body and may terminate at its outer end in an annular head 31. A stainless steel wire 32 has an outer end portion 33 extending axially through the plug 30 and secured to the head 31 so as to be permanently connected thereto. The inner end portion of the wire 32 is positioned within the bottle 26 and terminates in a bent or an angu'larly disposed end 34, so as to constitute a stop for limiting the outward movement of the plug 30 relative to the bottle when the plug is forced therefrom, upon the application of inward manual pressure exerted by the fingers 35 against the wall of the squeeze-to-use bottle or container 26.

The neck 27 of the bottle instead of being externally threaded, may be provided with a tapered smooth outer surface so as to frictionally engage a complementary formed wall surface of the tubular boss 24 of the supporting member 22 so as to provide an interlocking slip-type connection between the bottle and the collar instead of the threaded connection, as shown. While the radial flange 23 of the member 22 is preferably secured to the inner wall of the bag 10, it may be arranged in frictional engagement therewith and clamped to the bag upon the neck 27 of the bottle being moved into threaded engagement with the boss 24 so as to provide a tight liquid-proof seal.

In operation, assuming that the flexible bottle 26 has previously been filled at the laboratory with the correct amount of medication, and the plug 30 and its associated parts are in their closed position, the bottle 26 is connected to the side of the bag by being inserted through the opening 21 so that the neck thereof isbrought into threaded or frictional engagement with the adjacent inner wall of the supporting member 23. The parts are now in the position as shown in Fig. 4. Upon the application of inward pressure against opposite sides of the squeeze-to-use flexible or collapsible bottle 26 by the fingers 35 (Fig. 5), the plug 30 is ejected from within v into the bag, so that the tubular boss registers with said with the water or other liquid in the bag. The outer surface of the tubular portion 24 of the supporting member may be serrated, as at 37 (Fig. 5), so as to facilitate the handling of the supporting member when being initially applied to the inner wall of the bag. The flange 23 of the supporting member 22 extends outwardly and radially thereof while the boss or hub 24 projects laterally and centrally from one side of the flange; the sup porting member is positioned on the inside of the bag so as to releasably receive the neck 27 of the bottle which is positioned on the outside of the bag. Thus, means are provided which may be permanently connected to the interior of the bag so as to releasably receive the necks of bottles of the same diameter as that of the boss 24 of the tubular member.

It will be understood that the form of the invention shown is merely illustrative and that such changes may be made as come within the purview of the following claims.

I claim:

1. A syringe of the class described including a flexible bag having a mouth for introducing liquid into the bag, a discharge tube connected to the bottom of the bag, said bag having an opening in one side thereof adjacent said mouth, a supporting member within the bag and encircling said opening, said supporting member including a flange having a tubular boss projecting laterally and centrally therefrom into the bag, said flange engaging the inner wall of the bag so that the tubular boss registers with said opening, a pre-iilled squeeze container of medicament having a neck insertable into the bag through said opening, means on said boss and engaging said neck for maintaining the bottle in a fixed position relative to the bag, and a slide-type plug insertable into said neck to close the same, said plug being removed from the neck and the contents of the flexible container being discharged therefrom upon inward pressure being applied to the container.

2. A syringe as called for in claim 1 in which means are provided for preventing the complete withdrawal of the plug from the container when the plug is ejected therefrom.

3. A syringe as called for in claim 1 in which means are provided for securing said flange to the inner wall of the bag so that said boss may be detachably connected to containers filled with different medicaments.

4. A syringe of the class described including a flexible bag having a mouth for introducing liquid into the bag, a discharge tube connected to the bottom of the bag, said bag having an opening in one side thereof adjacent said mouth, a supporting member within the bag and encircling said opening, said supporting member including a tubular boss projecting laterally and centrally therefrom into the bag, so that the tubular boss registers with said opening, means for rigidly securing said member to the inner wall of the bag, a pre-filled squeeze-to-use container of medicament having a reduced neck insertable into the bag through said opening, means on said member and engaging said neck for maintaining said container in a fixed position relative to the bag, a slideable type plug insertable into said neck to close the same, said plug being removable from the neck and the contents of the flexible bottle being discharged therefrom upon application of inward pressure being applied to the container.

5. A syringe of the class described including a flexible bag having a mouth for introducing liquid into the bag, a discharge tube connected to the bottom of the bag, said bag having an opening in one side thereof adjacent said mouth, a supporting member within the bag and encircling said opening, said supporting member including a tubular boss projecting laterally and centrally therefrom opening, means for rigidly securing said member to the inner wall of the bag, a pie-filled squeeze-to-use container of medicament having a reduced neck extending into the bag through said opening, said boss having an internally threaded inner wall, and said neck having an externally threaded outer wall engageable with the threads on said boss for maintaining said container on the outside of the bag in a relatively fixed position, and a slide type ping insertable into said neck to close the same, said plug being removed from the neck and the contents of the flexible container being discharged therefrom upon the application of inward pressure being applied to the container.

6. A syringe as called for in claim 5 in which a bent wire is disposed within the container and is connected to said plug so as to limit the outward movement thereof and prevent the plug from falling into the bag when ejected from the container.

7 A syringe of the class described including a flexible bag having a mouth for introducing liquid into the bag, a discharge tube connected to the bottom of the bag, said bag having an opening in one side thereof adjacent said mouth, a supporting member within the bag and encircling said opening, said supporting member including a flange having a tubular boss projecting laterally and centrally therefrom into the bag, said flange engaging the inner wall of the bag so that the tubular boss registers with said opening, a pro-filled squeeze container on the outside of the bag and having a neck insertable into the bag through said opening, means on said boss and engaging said neck for maintaining the bottle in a fixed position relative to the bag, and a removable plug insertable into said neck to close the same, said plug being removed from the neck upon the application of inward pressure being applied to the container.

8. A syringe of the class described including a flexible bag having a mouth for introducing liquid into the bag, a discharge tube connected to the bottom of the bag, said bag having an opening in one side thereof adjacent said mouth, a supporting member within the bag and encircling said opening, said supporting member including a flange having a tubular boss projecting laterally from the flange, said flange engaging the inner wall of the bag so that the tubular boss registers with said opening, a pro-filled squeeze container of medicament having a neck insertable into the bag through said opening, means on said boss and engaging said neck for maintaining the bottle in a fixed position relative to the bag, and a slide-type plug insertable into said neck to close the same, said plug being removed from the neck and the contents of the flexible container being discharged therefrom upon inward pressure being applied to the container.

9. A disposable syringe of the class described including a bag having a mouth for introducing liquid thereto and a tube for discharging liquid therefrom, an opening in said bag, a support member secured to said bagand encircling said opening, said support member including tubular means projecting into said opening, a pre-filled medicament container having a discharge outlet, and coacting means on the container and the support member securing said outlet in sealed contact with said tubular means and thereby establishing communication for discharge of the contents of said container into said bag.

References Cited in the file of this patent UNITED STATES PATENTS 2,696,337 Dinhofer Dec. 7, 1954 2,856,929 Gassett et al Oct. 21, 1958 FOREIGN PATENTS 26,189 Great Britain Oct. 1, 1898 

